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Expired Canadian patentCanada

Wear and corrosion resistant articles made from pm alloyed irons

CA 1307136 C · Owner: Stasko, William · Inventors: Pinnow, Kenneth E.; Hauser, John J.; Stasko, William

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Abstract From the Canadian patent

A powder-metallurgy alloy article having a good combination of wear resistance and corrosion resistance. The article is further characterized by an attainable minimum hardness after heat treatment of 6ORC and a martensitic structure. The article is made from prealloyed particles or the composition in percent by, weight, carbon 2.5-5, manganese 0.2-1 phosphorus 0.10 maximum, sulfur 0.10 maximum silicon 1 maximum, nickel 0.5 maximum, chromium 15-30, molybdenum 2-10, vanadium 6-11 nitrogen 0.15 maximum, and balance, iron. The article has a fine uniform distribution, of a MC and other carbide phases.

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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.

Why it's free to use

  • Granted September 8, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 8, 2009.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledAugust 25, 1987
GrantedSeptember 8, 1992
Term endedSeptember 8, 2009
Patent numberCA 1307136 C
Classification (IPC)C22C29/02 +2 more

Timeline

Timeline From CIPO dates

19881991199419972000200320062009Application filedAug 25, 1987Patent grantedSep 8, 1992Term endedSep 8, 2009

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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.